Geogrid provided with filtration mesh layer for geodetic engineering

ABSTRACT

A construction of a geogrid integrated with a mesh used in geodetic engineering includes a reinforcement grid and a web; multiple longitudinal and lateral ribs of the geogrid being synchronously knitted with the web to become an integral part; the appearance of the integral part showing meshes of the geogrid and internally containing geodetic compound materials comprised of the web knitted with the ribs surrounding the web; the solid construction increasing friction resistance of the geodetic compound materials; the grids and multiple openings in different sizes of the web achieving good mutual containing behavior with gravels and sandy soil in different grains to improve mutual agreeable and separation functions between geodetic compound materials and the soil while improving the reinforcement function of the geogrid.

BACKGROUND OF THE INVENTION

(a) Field of the Invention

The present invention is related to a geogrid construction, and moreparticularly, to one comprised of multiple longitudinal and lateral ribsof the geogrid knitted with a web into an integrated part for theconstruction of the geogrid to contain solid strength in the form of theweb so to increase the strength of the geogrid and improve the sheathstrength between the geogrid and earth and stone by preventing earth andstone from penetrating through the mesh.

(b) Description of the Prior Art

The primary function of a geogrid is for reinforcement and can beapplied in reinforced retaining wall, slope, embankment, or the areafeaturing weak and soft geology. However, when the separation of theearth and stone on both sides due to difference in grain size isrequired at where geogrid is applied, the site will be paved with ageodetic woven fabric or non-fabric before paving the geogrid to achievethe purpose of separation. This work method is not economic norproviding easy work since it consumes too much time and labor and thegeodetic woven/non-woven fabric prevents easy meshing with the geogridthus to compromise the functions of reinforcement and separationotherwise expected from the geogrid.

SUMMARY OF THE INVENTION

The primary purpose of the present invention is to provide an integratedstructure of geogrid and web. To achieve the purpose, in the network ofthe geogrid, ribs are knitted with the web to become an integral partfor the mesh of the geogrid to provide reinforcement and separationfunctions and offer multiple benefits included upgraded work quality andcost saving.

The rough and uneven structure of solid web surface provided by the ribsof the geogrid and the web in the mesh of the geogrid effectivelyimprove a mutually contained yet agreeable mechanism with the earth andstone surrounding the geogrid to further increase the reinforcementresults.

The web in the mesh of the geogrid prevents soil containing finer grainsfrom penetrating into the geogrid thus to achieve the purpose ofseparation those finer grains from the geogrid. Furthermore, the presentinvention provides better structure since the geogrid and the web areknitted into an integral part to increase its benefits particularly whenapplied in separation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of a geogrid of the prior art.

FIG. 2 is another schematic view of the geogrid of the prior art.

FIG. 3 is a perspective view of the present invention.

FIG. 3-A is a layout of the present invention taken from FIG. 3.

FIG. 3-B is a magnified view of a local part taken from FIG. 3.

FIG. 4 is a schematic view of a preferred embodiment of the presentinvention.

FIG. 5 is a layout showing another preferred embodiment of the presentinvention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to FIGS. 3 and 3-A, the present invention is essentiallycomprised of a structure of geogrid having its longitudinal and lateralribs knitted with a web. Wherein, in the knitting process, each mesh 5Aof a geogrid rib 5 is synchronously knitted with a thin filterable web51 for the web 51 to define a closed distribution within each mesh 5A.The water permeable web 51 allow water containment W in soil S (orstones) to downwardly permeate and filter through as illustrated in FIG.4 while preventing soil of smaller grains to downwardly penetrate.Accordingly, the process of pavement of woven or non-woven fabric can beomitted, thus to provide further handling and construction costreduction.

Now referring to FIG. 4, the roughened geogrid 5 allows a thickness fallH between the web 51 and its abutted rib 5 to significantly form on bothsides of the web a distribution of multiple concaves SB one afteranother. The concave SB receives the soil S (or stones) due to theagreeable structure of the solid grid. Furthermore, concaves may locallycompress the web 51 to improve the mechanism of mutual agreement betweenthe web 51 and its rib 5 for further reinforcement while achieving thepurpose of mutual containing between the web 51 and its surrounding soilS (or stones).

As illustrated in FIGS. 4 and 5, without affecting the synchronousknitting for the web 51, the pattern and diameter of each of thosemeshes 5A in different sizes formed among the ribs 51 may vary dependingon the work conditions (e.g., a hexagonal mesh 5A as illustrate dinFIGS. 3 and 4 or a square mesh 5AA as illustrated in FIG. 5) to achievethe same purposes of mutual agreeable and mutual containing functionsbetween the web and the soil S (or stones).

A geogrid knitted with web of the present invention facilitates the workand allows cost reduction; therefore, an application for a utilitypatent is duly filed accordingly.

1. A construction of a reinforcement grid for geodetic engineeringknitted with a web into an integral part; the web being related to awater filterable thin film; longitudinal and lateral ribs of the geogridbeing synchronously knitted with the web; the web forming a closeddistribution among each mesh; and multiple concaves alternativelydistributed on both sides of the roughened solid web one by one beingdefined by thickness fall between the web and its abutted ribs of thegeogrid to allow water filtration and improved mutual containing andagreeable compound functions between the web and soil/stones.